MIX File Documentation
Summary
A Microsoft Image Exchange File is the image format of Microsoft's discontinued PhotoDraw and Picture It! programs (and Digital Image): a proprietary document that could mix photo (raster) and drawing (vector/object) layers in one file. The creating software is long gone, so the practical goal with a .mix file is rescue: open it in PhotoDraw/Picture It! if you still have it, or try XnView MP, then Save As PNG, JPG or TIFF. Note the same .mix extension is also used by Command & Conquer games for a completely different game-archive format.
Technical details
| Feature | Value |
|---|---|
| Full name | Microsoft Image Exchange File (PhotoDraw / Picture It! image) |
| File extension | .mix |
| MIME type | application/octet-stream |
| Format type | Proprietary Microsoft image document (raster + vector/object layers) |
| Developer | Microsoft |
| Created by | Microsoft PhotoDraw, Picture It!, Digital Image |
| Introduced | 1999 (PhotoDraw 2000 / Picture It! era) |
| Status | Discontinued — no current Microsoft program opens it |
| Likely container | Microsoft OLE2 Compound File Binary (CFB) |
| Possible magic number | D0 CF 11 E0 A1 B1 1A E1 (OLE2, when CFB-wrapped) |
| Open standard | No — proprietary, undocumented |
| Holds | Raster photo layers, vector/object layers, composition, metadata |
| Best free opener | XnView MP (reads many .mix images) |
| Legacy editors | PhotoDraw, Picture It!, Digital Image (if still installed) |
| Recover to | .png, .jpg, .tiff, .bmp |
| Same-extension format | Command & Conquer (Westwood) game asset archive |
| Related extensions | .png, .tif, .tiff, .jpg, .bmp |
| Specification | None public — fileinfo.com/extension/mix |
What is a MIX file?
A .mix file, in the Microsoft sense, is the native image document of Microsoft PhotoDraw and Microsoft Picture It! (and their successor Digital Image), consumer graphics programs Microsoft shipped around 1999 and 2000. PhotoDraw came with some editions of Office 2000; Picture It! and Digital Image were home photo editors. The name is often expanded as “Microsoft Image Exchange,” but that is a folk etymology: the format is simply the PhotoDraw/Picture It! image document. What the file genuinely does is mix content types, combining raster (photo) data with vector/object content (text, shapes, clip art) and multiple editable layers in one document, much like a lightweight PSD.
These layered .mix documents were Microsoft-proprietary and meant to be edited back inside the same application. They were never an interchange format despite the “exchange” nickname, and that, combined with the software being discontinued, is the whole story of why .mix files are awkward today.
A layered raster-plus-vector document
The reason MIX existed as its own format, rather than PhotoDraw just saving JPEGs, is that it preserved an editable composition. A single .mix could hold one or more photographic raster layers, plus vector object layers for text, drawn shapes and clip art, plus the composition data that records layer order and effects, plus document metadata. Opening the file in PhotoDraw restored all of that as separately editable objects, so you could move the text, recolour a shape or swap the photo without flattening the picture.
MIX document (conceptual)
┌─ Document container (Microsoft-proprietary, OLE2-based)
├─ Raster layer(s) photographic bitmap content
├─ Vector/object layer(s) editable text, shapes, clip art
├─ Composition layer order, effects, blending
└─ Metadata document properties
The container is understood to be built on Microsoft's OLE2 Compound File format (the same wrapper as legacy Office documents), which is why a .mix commonly starts with the OLE2 signature. But the internal streams that hold the layers are proprietary and were never documented publicly, so nothing outside PhotoDraw ever read them fully. That single gap explains the patchy support the format has today.
A dead product line, and what that means for the file
The entire product line is discontinued. Microsoft stopped developing PhotoDraw after PhotoDraw 2000 Version 2, and Picture It! and Digital Image were wound down in the late 2000s. There is no current, supported Microsoft program that opens a .mix, and because it was never an interchange format, third-party support is uneven. This makes MIX a preservation problem rather than a working format: the realistic goal with any .mix you find is to rescue the picture into something universal before the ability to open it disappears entirely.
People meet Microsoft .mix files when they dig up old projects made in PhotoDraw or Picture It!, inherit files from an older PC, or find an image referenced by an old Office document. In almost every case the aim is the same: get the picture out.
Opening a MIX and recovering the image
There are two routes. If you still have Microsoft PhotoDraw, Picture It! or Digital Image installed, open the .mix there, where the layers are intact, and immediately Save As a standard format. If you do not, the most commonly cited third-party option is XnView MP, a free image viewer and converter that reads many .mix images; results vary by sub-variant because the format is proprietary, so it may open some files and not others.
Once open, export to a modern, universal format: PNG (lossless, keeps transparency, good for graphics and text), JPG (small, fine for photos), or TIFF (maximum quality for archiving). All of these flatten the document: the editable raster and vector layers collapse into one image. There is no reliable path to keep the layers, including no working .mix to PSD conversion, because the proprietary layer data does not map onto another editor's model. If you genuinely need to keep editing layers, do that work inside PhotoDraw before exporting a flattened copy.
The other .mix: Command & Conquer archives
The .mix extension is heavily used by a completely unrelated format: the Command & Conquer game archives from Westwood Studios. In classic C&C, Red Alert and Tiberian Sun, .mix files are container archives bundling the games' movies, music, sounds and other assets, with an index of the packed files at the start. They have nothing to do with images or PhotoDraw. If a .mix came out of a game's install folder, no image editor will read it; it needs a C&C MIX extractor instead. The reliable way to tell the two apart is provenance: a graphics/photo origin points to the Microsoft image, a game folder points to the Westwood archive.
References
- FileInfo — MIX (PhotoDraw / Picture It!)
- Wikipedia — Microsoft PhotoDraw
- XnView — image viewer/converter (official)
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